$ git clone -n https://src.fedoraproject.org/rpms/ghc-skein.git /var/lib/mock/f40-build-776668-129001/root/chroot_tmpdir/scmroot/ghc-skein
Cloning into '/var/lib/mock/f40-build-776668-129001/root/chroot_tmpdir/scmroot/ghc-skein'...
$ git fetch origin 98891ecdf88b3f145eba23033681ef8f1eab60f7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-skein
 * [new ref]         98891ecdf88b3f145eba23033681ef8f1eab60f7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 98891ec Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild