$ git clone -n https://src.fedoraproject.org/rpms/python-asn1.git /var/lib/mock/f45-build-29449-639/root/chroot_tmpdir/scmroot/python-asn1
Cloning into '/var/lib/mock/f45-build-29449-639/root/chroot_tmpdir/scmroot/python-asn1'...
$ git fetch origin 1ebdc3d76f206e61310d3d67922094b8d9a05e23:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-asn1
 * [new ref]         1ebdc3d76f206e61310d3d67922094b8d9a05e23 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1ebdc3d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild