$ git clone -n https://src.fedoraproject.org/rpms/rawtherapee.git /var/lib/mock/f42-build-side-1-3514864-46092/root/chroot_tmpdir/scmroot/rawtherapee
Cloning into '/var/lib/mock/f42-build-side-1-3514864-46092/root/chroot_tmpdir/scmroot/rawtherapee'...
$ git fetch origin 3ed02787daf00ce96cb7d5ae0b5d8657db384a21:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rawtherapee
 * [new ref]         3ed02787daf00ce96cb7d5ae0b5d8657db384a21 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ed0278 Update to 5.12-RC1 (Fedora#2361830)