$ git clone -n https://src.fedoraproject.org/rpms/ruby-build.git /var/lib/mock/f41-build-819830-151925/root/chroot_tmpdir/scmroot/ruby-build
Cloning into '/var/lib/mock/f41-build-819830-151925/root/chroot_tmpdir/scmroot/ruby-build'...
$ git fetch origin de194c7e0321290fd5a2d93a09b007e35313d1c0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ruby-build
 * [new ref]         de194c7e0321290fd5a2d93a09b007e35313d1c0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at de194c7 Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild