$ git clone -n https://src.fedoraproject.org/rpms/scantailor.git /var/lib/mock/f40-build-2260794-54422/root/chroot_tmpdir/scmroot/scantailor
Cloning into '/var/lib/mock/f40-build-2260794-54422/root/chroot_tmpdir/scmroot/scantailor'...
$ git fetch origin 156b3b975183941f24cf6648dcb8c11d6d89242b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/scantailor
 * [new ref]         156b3b975183941f24cf6648dcb8c11d6d89242b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 156b3b9 Fix build with boost-1.83.0