$ git clone -n https://src.fedoraproject.org/rpms/kcachegrind.git /var/lib/mock/f40-build-2192837-51471/root/chroot_tmpdir/scmroot/kcachegrind
Cloning into '/var/lib/mock/f40-build-2192837-51471/root/chroot_tmpdir/scmroot/kcachegrind'...
$ git fetch origin 171e49038c14613f776b7bd79baa13b8490e9e0b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kcachegrind
 * [new ref]         171e49038c14613f776b7bd79baa13b8490e9e0b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 171e490 24.01.85