$ git clone -n https://src.fedoraproject.org/rpms/rust-test-case.git /var/lib/mock/f45-build-45389-822/root/chroot_tmpdir/scmroot/rust-test-case
Cloning into '/var/lib/mock/f45-build-45389-822/root/chroot_tmpdir/scmroot/rust-test-case'...
$ git fetch origin f1e48c85f28281dfc9b01644d7ede7d8711fb382:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-test-case
 * [new ref]         f1e48c85f28281dfc9b01644d7ede7d8711fb382 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f1e48c8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild