$ git clone -n https://src.fedoraproject.org/rpms/mint-themes.git /var/lib/mock/f41-build-1022440-18072/root/chroot_tmpdir/scmroot/mint-themes
Cloning into '/var/lib/mock/f41-build-1022440-18072/root/chroot_tmpdir/scmroot/mint-themes'...
$ git fetch origin d84af1f7a1da2c983936654ae873776500d7c076:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mint-themes
 * [new ref]         d84af1f7a1da2c983936654ae873776500d7c076 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d84af1f Update to 2.1.7