$ git clone -n https://src.fedoraproject.org/rpms/rust-gif0.12.git /var/lib/mock/f41-build-side-1-3124904-39482/root/chroot_tmpdir/scmroot/rust-gif0.12
Cloning into '/var/lib/mock/f41-build-side-1-3124904-39482/root/chroot_tmpdir/scmroot/rust-gif0.12'...
$ git fetch origin 679904e8bd12092230a50e966c16264c1c93d99f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gif0.12
 * [new ref]         679904e8bd12092230a50e966c16264c1c93d99f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 679904e compat package no longer needed