$ git clone -n https://src.fedoraproject.org/rpms/golang-github-mdlayher-ethtool.git /var/lib/mock/f38-build-side-42-init-devel-1082489-29833/root/chroot_tmpdir/scmroot/golang-github-mdlayher-ethtool
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1082489-29833/root/chroot_tmpdir/scmroot/golang-github-mdlayher-ethtool'...
$ git fetch origin aa5ee939aa17fe3291d1419cc54864c377074227:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-mdlayher-ethtool
 * [new ref]         aa5ee939aa17fe3291d1419cc54864c377074227 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa5ee93 initial commit, closes rhbz#2198968