Error when building 1.15.2 Spigot server with BuildTools (see full trace in BuildTools.log.txt)

Command launched:

 sudo java -jar BuildTools.jar --rev latest

Last lines :

Patching with EntitySpider.patch
Rebuilding Forked projects....
Resetting Spigot-API to Bukkit...
HEAD is now at 7361a62e SPIGOT-5641: Add Block.getDrops(ItemStack, Entity)
Applying patches to Spigot-API...
Applying: POM Changes
error: sha1 information is lacking or useless (pom.xml).
error: could not build fake ancestor
hint: Use 'git am --show-current-patch' to see the failed patch
Patch failed at 0001 POM Changes
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".
Something did not apply cleanly to Spigot-API.
Please review above details and finish the apply then
save the changes with rebuildPatches.sh
Error compiling Spigot. Please check the wiki for FAQs.
If this does not resolve your issue then please pastebin the entire BuildTools.log.txt file when seeking support.
java.lang.RuntimeException: Error running command, return status !=0: [sh, applyPatches.sh]
at org.spigotmc.builder.Builder.runProcess0(Builder.java:789)

 

Previous Build of 1.14.4 ans 1.15.1 Spigot server were successfull on this server.

 

Thanks in advance.