$ git clone -n https://src.fedoraproject.org/rpms/ghc-foundation.git /var/lib/mock/f42-build-877902-180332/root/chroot_tmpdir/scmroot/ghc-foundation
Cloning into '/var/lib/mock/f42-build-877902-180332/root/chroot_tmpdir/scmroot/ghc-foundation'...
$ git fetch origin b34b42ce26e21be913241d94660bcc3cfad296ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-foundation
 * [new ref]         b34b42ce26e21be913241d94660bcc3cfad296ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b34b42c Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild