$ git clone -n https://src.fedoraproject.org/rpms/distrobox.git /var/lib/mock/f40-build-2588428-62546/root/chroot_tmpdir/scmroot/distrobox
Cloning into '/var/lib/mock/f40-build-2588428-62546/root/chroot_tmpdir/scmroot/distrobox'...
$ git fetch origin 7d87d1ce2d07358ebd456f1342642fbd3bd2d753:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/distrobox
 * [new ref]         7d87d1ce2d07358ebd456f1342642fbd3bd2d753 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d87d1c Update to 1.7.0.1