$ git clone -n https://src.fedoraproject.org/rpms/rust-bootupd.git /var/lib/mock/f41-build-855784-167429/root/chroot_tmpdir/scmroot/rust-bootupd
Cloning into '/var/lib/mock/f41-build-855784-167429/root/chroot_tmpdir/scmroot/rust-bootupd'...
$ git fetch origin a15a0dbe9f8b4bac97df4a07ada2e72cb92c28b1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bootupd
 * [new ref]         a15a0dbe9f8b4bac97df4a07ada2e72cb92c28b1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a15a0db Release 0.2.24