$ git clone -n https://src.fedoraproject.org/rpms/build-helper-maven-plugin.git /var/lib/mock/f39-build-1688348-41114/root/chroot_tmpdir/scmroot/build-helper-maven-plugin
Cloning into '/var/lib/mock/f39-build-1688348-41114/root/chroot_tmpdir/scmroot/build-helper-maven-plugin'...
$ git fetch origin d957eb6ecadd2ed845671eb2c9d948135196e4cc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/build-helper-maven-plugin
 * [new ref]         d957eb6ecadd2ed845671eb2c9d948135196e4cc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d957eb6 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild