$ git clone -n https://src.fedoraproject.org/rpms/perl-B-Keywords.git /var/lib/mock/f40-build-2620243-64663/root/chroot_tmpdir/scmroot/perl-B-Keywords
Cloning into '/var/lib/mock/f40-build-2620243-64663/root/chroot_tmpdir/scmroot/perl-B-Keywords'...
$ git fetch origin 40af2867cafb4aaa0305880202cb18f061e41006:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-B-Keywords
 * [new ref]         40af2867cafb4aaa0305880202cb18f061e41006 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 40af286 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild