$ git clone -n https://src.fedoraproject.org/rpms/rust-unsafe-libyaml.git /var/lib/mock/f45-build-45955-829/root/chroot_tmpdir/scmroot/rust-unsafe-libyaml
Cloning into '/var/lib/mock/f45-build-45955-829/root/chroot_tmpdir/scmroot/rust-unsafe-libyaml'...
$ git fetch origin 9275dc69e5d3245cbdf95b8b8c53a9d112964bed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unsafe-libyaml
 * [new ref]         9275dc69e5d3245cbdf95b8b8c53a9d112964bed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9275dc6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild