$ git clone -n https://src.fedoraproject.org/rpms/frogr.git /var/lib/mock/f39-build-1497209-34600/root/chroot_tmpdir/scmroot/frogr
Cloning into '/var/lib/mock/f39-build-1497209-34600/root/chroot_tmpdir/scmroot/frogr'...
$ git fetch origin 96e858a8d8f386c6a8c03ed86c9fc1a610eb9973:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/frogr
 * [new ref]         96e858a8d8f386c6a8c03ed86c9fc1a610eb9973 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 96e858a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild