$ git clone -n https://src.fedoraproject.org/rpms/golang-github-ultradns-sdk.git /var/lib/mock/f39-build-1570161-37751/root/chroot_tmpdir/scmroot/golang-github-ultradns-sdk
Cloning into '/var/lib/mock/f39-build-1570161-37751/root/chroot_tmpdir/scmroot/golang-github-ultradns-sdk'...
$ git fetch origin b2835d92e4c3f0426ee6b474d41962ebad27bc7d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-ultradns-sdk
 * [new ref]         b2835d92e4c3f0426ee6b474d41962ebad27bc7d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2835d9 Initial import