$ git clone -n https://src.fedoraproject.org/rpms/kf6-qqc2-desktop-style.git /var/lib/mock/f45-build-15133-468/root/chroot_tmpdir/scmroot/kf6-qqc2-desktop-style
Cloning into '/var/lib/mock/f45-build-15133-468/root/chroot_tmpdir/scmroot/kf6-qqc2-desktop-style'...
$ git fetch origin 3abbc106e751a20bfee989f95184fa1fca57abb2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-qqc2-desktop-style
 * [new ref]         3abbc106e751a20bfee989f95184fa1fca57abb2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3abbc10 6.31.0