$ git clone -n https://src.fedoraproject.org/rpms/rust-enumn.git /var/lib/mock/f40-build-2036179-48007/root/chroot_tmpdir/scmroot/rust-enumn
Cloning into '/var/lib/mock/f40-build-2036179-48007/root/chroot_tmpdir/scmroot/rust-enumn'...
$ git fetch origin f0f671c52f96782c1de25ca306d1c50816a26282:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-enumn
 * [new ref]         f0f671c52f96782c1de25ca306d1c50816a26282 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f0f671c Update to 0.1.12 (rhbz#2237017)