$ git clone -n https://src.fedoraproject.org/rpms/jgoodies-common.git /var/lib/mock/f42-build-3353608-45017/root/chroot_tmpdir/scmroot/jgoodies-common
Cloning into '/var/lib/mock/f42-build-3353608-45017/root/chroot_tmpdir/scmroot/jgoodies-common'...
$ git fetch origin 99eaca9027874f3d73bc51c34f6200bfdcd4f5b1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jgoodies-common
 * [new ref]         99eaca9027874f3d73bc51c34f6200bfdcd4f5b1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99eaca9 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild