$ git clone -n https://src.fedoraproject.org/rpms/llvm15.git /var/lib/mock/f41-build-1316097-23509/root/chroot_tmpdir/scmroot/llvm15
Cloning into '/var/lib/mock/f41-build-1316097-23509/root/chroot_tmpdir/scmroot/llvm15'...
$ git fetch origin 6732dd3ea000acc4ee48fabf3cc857a0b23fbac5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/llvm15
 * [new ref]         6732dd3ea000acc4ee48fabf3cc857a0b23fbac5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6732dd3 Fix scriplets for flatpak builds