$ git clone -n https://src.fedoraproject.org/rpms/yosyshq-abc.git /var/lib/mock/f41-build-851129-165857/root/chroot_tmpdir/scmroot/yosyshq-abc
Cloning into '/var/lib/mock/f41-build-851129-165857/root/chroot_tmpdir/scmroot/yosyshq-abc'...
$ git fetch origin c90a09f0a9b6c38b777e1f2a42d25e00d1ebf592:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yosyshq-abc
 * [new ref]         c90a09f0a9b6c38b777e1f2a42d25e00d1ebf592 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c90a09f update to 0.45 snapshot