$ git clone -n https://src.fedoraproject.org/rpms/rust-krun.git /var/lib/mock/f41-build-861588-169847/root/chroot_tmpdir/scmroot/rust-krun
Cloning into '/var/lib/mock/f41-build-861588-169847/root/chroot_tmpdir/scmroot/rust-krun'...
$ git fetch origin a2fd0eeae8a1eb27e8aaaeff2ccc313905ed89a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-krun
 * [new ref]         a2fd0eeae8a1eb27e8aaaeff2ccc313905ed89a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a2fd0ee Initial import; Fixes: RHBZ#2311969