$ git clone -n https://src.fedoraproject.org/rpms/rust-remove_dir_all.git /var/lib/mock/f45-build-44395-813/root/chroot_tmpdir/scmroot/rust-remove_dir_all
Cloning into '/var/lib/mock/f45-build-44395-813/root/chroot_tmpdir/scmroot/rust-remove_dir_all'...
$ git fetch origin 3b7711aec3723f7d4bf09c92f3c4f99f99a2f408:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-remove_dir_all
 * [new ref]         3b7711aec3723f7d4bf09c92f3c4f99f99a2f408 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b7711a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild