$ git clone -n https://src.fedoraproject.org/rpms/jgoodies-common.git /var/lib/mock/f40-build-2103898-50564/root/chroot_tmpdir/scmroot/jgoodies-common
Cloning into '/var/lib/mock/f40-build-2103898-50564/root/chroot_tmpdir/scmroot/jgoodies-common'...
$ git fetch origin c88062e60e5596fb80d8f8870daab9addc99d5b7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jgoodies-common
 * [new ref]         c88062e60e5596fb80d8f8870daab9addc99d5b7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c88062e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild