$ git clone -n https://src.fedoraproject.org/rpms/gtkhash.git /var/lib/mock/f40-build-2669602-67266/root/chroot_tmpdir/scmroot/gtkhash
Cloning into '/var/lib/mock/f40-build-2669602-67266/root/chroot_tmpdir/scmroot/gtkhash'...
$ git fetch origin 16e0e32c716c0d04824bf5bf28c5f8a8dcd87193:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtkhash
 * [new ref]         16e0e32c716c0d04824bf5bf28c5f8a8dcd87193 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 16e0e32 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild