$ git clone -n https://src.fedoraproject.org/rpms/perl-Alien-Base-ModuleBuild.git /var/lib/mock/f40-build-2014886-46019/root/chroot_tmpdir/scmroot/perl-Alien-Base-ModuleBuild
Cloning into '/var/lib/mock/f40-build-2014886-46019/root/chroot_tmpdir/scmroot/perl-Alien-Base-ModuleBuild'...
$ git fetch origin 16d86bfae5f9320c5fa8d58f7346864b6bced6b7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Alien-Base-ModuleBuild
 * [new ref]         16d86bfae5f9320c5fa8d58f7346864b6bced6b7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 16d86bf Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild