$ git clone -n https://src.fedoraproject.org/rpms/rust-termbg.git /var/lib/mock/f45-build-45355-822/root/chroot_tmpdir/scmroot/rust-termbg
Cloning into '/var/lib/mock/f45-build-45355-822/root/chroot_tmpdir/scmroot/rust-termbg'...
$ git fetch origin a51cd7c997b7581792c62fb65491a75086dbe498:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-termbg
 * [new ref]         a51cd7c997b7581792c62fb65491a75086dbe498 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a51cd7c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild