$ git clone -n https://src.fedoraproject.org/rpms/ghc-fgl.git /var/lib/mock/f42-build-877406-180226/root/chroot_tmpdir/scmroot/ghc-fgl
Cloning into '/var/lib/mock/f42-build-877406-180226/root/chroot_tmpdir/scmroot/ghc-fgl'...
$ git fetch origin 760a05eb4b59d80a3b4836805174e355291c5994:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-fgl
 * [new ref]         760a05eb4b59d80a3b4836805174e355291c5994 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 760a05e Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild