$ git clone -n https://src.fedoraproject.org/rpms/python-ecdsa.git /var/lib/mock/f45-build-30503-646/root/chroot_tmpdir/scmroot/python-ecdsa
Cloning into '/var/lib/mock/f45-build-30503-646/root/chroot_tmpdir/scmroot/python-ecdsa'...
$ git fetch origin d2cb5fc9eb3015f0100c29a8e09e23904abca448:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-ecdsa
 * [new ref]         d2cb5fc9eb3015f0100c29a8e09e23904abca448 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2cb5fc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild