$ git clone -n https://src.fedoraproject.org/rpms/jackson-core.git /var/lib/mock/f42-build-3273574-41312/root/chroot_tmpdir/scmroot/jackson-core
Cloning into '/var/lib/mock/f42-build-3273574-41312/root/chroot_tmpdir/scmroot/jackson-core'...
$ git fetch origin 3ac76cd5d68102643f8dcab82ec9fd0ba7c9e462:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jackson-core
 * [new ref]         3ac76cd5d68102643f8dcab82ec9fd0ba7c9e462 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ac76cd Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild