$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_mv.git /var/lib/mock/f45-build-45988-830/root/chroot_tmpdir/scmroot/rust-uu_mv
Cloning into '/var/lib/mock/f45-build-45988-830/root/chroot_tmpdir/scmroot/rust-uu_mv'...
$ git fetch origin 500062b6837ce1a9170837b88da6a24ece02819a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_mv
 * [new ref]         500062b6837ce1a9170837b88da6a24ece02819a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 500062b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild