$ git clone -n https://src.fedoraproject.org/rpms/rust-indicatif0.15.git /var/lib/mock/f42-build-3231241-41191/root/chroot_tmpdir/scmroot/rust-indicatif0.15
Cloning into '/var/lib/mock/f42-build-3231241-41191/root/chroot_tmpdir/scmroot/rust-indicatif0.15'...
$ git fetch origin 9b30b1e7e097674aa27beb782b3affc16661fa1c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-indicatif0.15
 * [new ref]         9b30b1e7e097674aa27beb782b3affc16661fa1c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b30b1e compat package no longer needed