$ git clone -n https://src.fedoraproject.org/rpms/rust-devicemapper.git /var/lib/mock/f39-test-2571967-62250/root/chroot_tmpdir/scmroot/rust-devicemapper
Cloning into '/var/lib/mock/f39-test-2571967-62250/root/chroot_tmpdir/scmroot/rust-devicemapper'...
$ git fetch origin da8b15e9152e978db2ccf359de62f8cca2ab0bee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-devicemapper
 * [new ref]         da8b15e9152e978db2ccf359de62f8cca2ab0bee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at da8b15e Update to version 0.34.1