$ git clone -n https://src.fedoraproject.org/rpms/plasma-mobile.git /var/lib/mock/f38-build-side-42-init-devel-784351-27948/root/chroot_tmpdir/scmroot/plasma-mobile
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-784351-27948/root/chroot_tmpdir/scmroot/plasma-mobile'...
$ git fetch origin fa788caed67f77b46f2098b7175f26621c3c7ff7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-mobile
 * [new ref]         fa788caed67f77b46f2098b7175f26621c3c7ff7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fa788ca 5.27.4