$ git clone -n https://src.fedoraproject.org/rpms/qt4-theme-quarticurve.git /var/lib/mock/f41-build-side-1-2768807-32099/root/chroot_tmpdir/scmroot/qt4-theme-quarticurve
Cloning into '/var/lib/mock/f41-build-side-1-2768807-32099/root/chroot_tmpdir/scmroot/qt4-theme-quarticurve'...
$ git fetch origin bfbc07102bd19af961c1a60ac8a7933002ded25a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt4-theme-quarticurve
 * [new ref]         bfbc07102bd19af961c1a60ac8a7933002ded25a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bfbc071 convert GPLv2 license to SPDX