$ git clone -n https://src.fedoraproject.org/rpms/90-Second-Portraits.git /var/lib/mock/f40-build-2260544-54411/root/chroot_tmpdir/scmroot/90-Second-Portraits
Cloning into '/var/lib/mock/f40-build-2260544-54411/root/chroot_tmpdir/scmroot/90-Second-Portraits'...
$ git fetch origin 186fb54bf42c9a36f4e434655f7ffb3df58e62d5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/90-Second-Portraits
 * [new ref]         186fb54bf42c9a36f4e434655f7ffb3df58e62d5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 186fb54 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild