$ git clone -n https://src.fedoraproject.org/rpms/golang-modernc-irgo.git /var/lib/mock/f40-build-2552343-61958/root/chroot_tmpdir/scmroot/golang-modernc-irgo
Cloning into '/var/lib/mock/f40-build-2552343-61958/root/chroot_tmpdir/scmroot/golang-modernc-irgo'...
$ git fetch origin 510cabb8627501919b7fac3f5169b512baa3e0da:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-modernc-irgo
 * [new ref]         510cabb8627501919b7fac3f5169b512baa3e0da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 510cabb Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild