$ git clone -n https://src.fedoraproject.org/rpms/sasl-xoauth2.git /var/lib/mock/f39-build-1513027-35584/root/chroot_tmpdir/scmroot/sasl-xoauth2
Cloning into '/var/lib/mock/f39-build-1513027-35584/root/chroot_tmpdir/scmroot/sasl-xoauth2'...
$ git fetch origin 4404046908f02112fc904374ceba072d7bcfebc9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sasl-xoauth2
 * [new ref]         4404046908f02112fc904374ceba072d7bcfebc9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4404046 sasl-xoauth2-0.24-1 (#2208250)