$ git clone -n https://src.fedoraproject.org/rpms/tuptime.git /var/lib/mock/f39-build-1573224-37802/root/chroot_tmpdir/scmroot/tuptime
Cloning into '/var/lib/mock/f39-build-1573224-37802/root/chroot_tmpdir/scmroot/tuptime'...
$ git fetch origin 90168e77c8161aa7552ad4b3a9ed72e4bff04a2e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tuptime
 * [new ref]         90168e77c8161aa7552ad4b3a9ed72e4bff04a2e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 90168e7 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild