$ git clone -n https://src.fedoraproject.org/rpms/rust-nom.git /var/lib/mock/f40-build-2307439-57225/root/chroot_tmpdir/scmroot/rust-nom
Cloning into '/var/lib/mock/f40-build-2307439-57225/root/chroot_tmpdir/scmroot/rust-nom'...
$ git fetch origin 5ef7179b998796a5751872f8ce92ecf1f1292d9c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nom
 * [new ref]         5ef7179b998796a5751872f8ce92ecf1f1292d9c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5ef7179 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild