$ git clone -n https://src.fedoraproject.org/rpms/python-keyrings-alt.git /var/lib/mock/f45-build-31304-651/root/chroot_tmpdir/scmroot/python-keyrings-alt
Cloning into '/var/lib/mock/f45-build-31304-651/root/chroot_tmpdir/scmroot/python-keyrings-alt'...
$ git fetch origin 26c7d8bf538ca99053caebfe2071a40f748772d1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-keyrings-alt
 * [new ref]         26c7d8bf538ca99053caebfe2071a40f748772d1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 26c7d8b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild