$ git clone -n https://src.fedoraproject.org/rpms/libxshmfence.git /var/lib/mock/f40-build-785447-133955/root/chroot_tmpdir/scmroot/libxshmfence
Cloning into '/var/lib/mock/f40-build-785447-133955/root/chroot_tmpdir/scmroot/libxshmfence'...
$ git fetch origin f818722aa3bc642ab65130ed5f5a5a21422343dd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libxshmfence
 * [new ref]         f818722aa3bc642ab65130ed5f5a5a21422343dd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f818722 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild