$ git clone -n https://src.fedoraproject.org/rpms/cryptobone.git /var/lib/mock/f38-build-side-42-init-devel-1278229-30665/root/chroot_tmpdir/scmroot/cryptobone
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1278229-30665/root/chroot_tmpdir/scmroot/cryptobone'...
$ git fetch origin 82d81426f500fb3e3caa774c9c03b2100517c005:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cryptobone
 * [new ref]         82d81426f500fb3e3caa774c9c03b2100517c005 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 82d8142 Merge branch 'rawhide' into f38