$ git clone -n https://src.fedoraproject.org/rpms/libosmocore.git /var/lib/mock/f45-build-16732-490/root/chroot_tmpdir/scmroot/libosmocore
Cloning into '/var/lib/mock/f45-build-16732-490/root/chroot_tmpdir/scmroot/libosmocore'...
$ git fetch origin 700d8c468665160e18bd8039e4aa3314916bf9a2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libosmocore
 * [new ref]         700d8c468665160e18bd8039e4aa3314916bf9a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 700d8c4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild