$ git clone -n https://src.fedoraproject.org/rpms/rust-datatest-stable.git /var/lib/mock/f45-build-41232-780/root/chroot_tmpdir/scmroot/rust-datatest-stable
Cloning into '/var/lib/mock/f45-build-41232-780/root/chroot_tmpdir/scmroot/rust-datatest-stable'...
$ git fetch origin 6e03443934ec96294aa539213dce356ef0b6fbe5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-datatest-stable
 * [new ref]         6e03443934ec96294aa539213dce356ef0b6fbe5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6e03443 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild