$ git clone -n https://src.fedoraproject.org/rpms/rust-drm-fourcc.git /var/lib/mock/f39-build-1543452-36561/root/chroot_tmpdir/scmroot/rust-drm-fourcc
Cloning into '/var/lib/mock/f39-build-1543452-36561/root/chroot_tmpdir/scmroot/rust-drm-fourcc'...
$ git fetch origin cfb377fa5f8fc1dc719d1c708e63e9abb86e84a1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-drm-fourcc
 * [new ref]         cfb377fa5f8fc1dc719d1c708e63e9abb86e84a1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cfb377f Initial import; Fixes: RHBZ#2224810